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For the Inventor, By the Inventor

Houston, TX, United States of America

Stone & Webster Process Technology, Inc.

Calculating rank
USPTO Granted Patents = 26

% Expired Patents = 19.2



Trademarks = 5

Forward Citations = 169

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41 inventors (with patents filed for the assignee):

goldMedal Eusebius Anku Gbordzoe (4 out of 15 patents)

silverMedal Chris Robert Santner (4 out of 8 patents)

bronzeMedal Warren S Letzsch (4 out of 5 patents)

4.  Sabah A Kurukchi (3 out of 18 patents)

5.  Joseph M Gondolfe (3 out of 13 patents)

6.  Harvey McQuiston (3 out of 5 patents)

7.  Kelly Benham (3 out of 4 patents)

8.  David J Brown (3 out of 4 patents)

9.  Ed Yuan (2 out of 2 patents)

10.  Gary Jackson (2 out of 2 patents)

11.  John Brewer (2 out of 3 patents)

12.  Martyn D Roberts (2 out of 2 patents)

13.  Richard Barchas (2 out of 3 patents)

14.  Douglas Hubbell (1 out of 3 patents)

15.  Robert J Gartside (1 out of 72 patents)


Core Competencies:
Fluid Catalytic Cracking
Desulfurization
Olefin Production
Catalyst Temperature Control
Hydrocarbon Cracking
Spent Catalyst Distributor
Acid Gas Removal
Vapor Distributor
Chemical Absorption
Heat Balance Method
Riser Termination Device
Three Phase Mixing

26 patents:

1. 8496786 - Heavy feed mixer (2013-07-30),
2. 8383051 - Separating and stripping apparatus for external FCC risers (2013-02-26),
3. 8349753 - Bathtub-type spent catalyst distributor for effective counter-current regeneration in fluid catalytic cracking units (2013-01-08),
4. 8309776 - Method for contaminants removal in the olefin production process (2012-11-13),
5. 7951739 - Bathtub-type spent catalyst distributor for effective counter-current regeneration in fluid catalytic cracking units (2011-05-31),
6. 7793859 - Fluidized catalytic cracking feed nozzle (2010-09-14),
7. 7772449 - Removal of acid gases and sulfur compounds from hydrocarbon gas streams in a caustic tower (2010-08-10),
8. 7745365 - Bathtub-type spent catalyst distributor for effective counter-current regeneration in fluid catalytic cracking units (2010-06-29),
9. 7744067 - Three phase vapor distributor (2010-06-29),
10. 7591939 - Integrated desulfurization and FCC process (2009-09-22),
11. 7482502 - Process for cracking hydrocarbons using improved furnace reactor tubes (2009-01-27),
12. 7479218 - Deep catalytic cracking process (2009-01-20),
13. 7429363 - Riser termination device (2008-09-30),
14. 7402290 - Condensation reduction in fluid mixing (2008-07-22),
15. 7273543 - Process and apparatus for controlling catalyst temperature in a catalyst stripper (2007-09-25),
Company Overview
Stone & Webster Process Technology, Inc., based in Houston, TX, specializes in providing advanced engineering and technology solutions for the energy and process industries. The company focuses on the development of innovative processes and technologies that enhance operational efficiency and sustainability in sectors such as oil and gas, petrochemicals, and power generation. With a commitment to research and development, Stone & Webster Process Technology aims to deliver cutting-edge solutions that meet the evolving needs of its clients globally.
Profile summary synthesized from public USPTO records and patent filings.

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USPTO Data Jan 1 1976 - Oct 27 2026

Stone & Webster Process Technology, Inc. USPTO Patent Assignee Logo
26 Patents

#209 in Houston, TX

#739 in Texas

#12,875 in US

#24,848 in the World

Houston, TX (US)
Houston, TX, United States of America

Stone & Webster Process Technology, Inc.

Forward Citations = 169

41 inventors:

goldMedal Eusebius Anku Gbordzoe (4 out of 15 patents)

silverMedal Chris Robert Santner (4 out of 8 patents)

bronzeMedal Warren S Letzsch (4 out of 5 patents)

4.  Sabah A Kurukchi (3 out of 18 patents)

5.  Joseph M Gondolfe (3 out of 13 patents)

IDiyas Innovation Intelligence. (2026). Company Patent Portfolio: Stone & Webster Process Technology, Inc.. Retrieved from https://idiyas.com/company/stone-and-webster-process-technology

Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile

Data Sources: USPTO Patent Grant XML, Patent Center, EPO & CIPO • Normalized by IDiyas Innovation Graph. Methodology & provenance architecturePlease report any incorrect information to [email protected]
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